\begin{table}[htbp]\centering
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\caption{Cross-Candidate Communication, Affective Polarization (Traits) and In-Party Candidate Support\label{tab:ccXaptmain}}
\begin{tabular}{l*{3}{c}}
\hline\hline
                &\multicolumn{1}{c}{(1)}   &\multicolumn{1}{c}{(2)}   &\multicolumn{1}{c}{(3)}   \\
                &In-Group Affect   &Out-Group Affect   &Difference   \\
                &      b/p   &      b/p   &      b/p   \\
\hline
Candidate Support&            &            &            \\
RCV Comp.       &    0.172   &    1.039   &    0.162   \\
                &  (0.794)   &  (0.303)   &  (0.383)   \\
RCV Comp. + Endorse&   -1.722** &    0.283   &   -0.687***\\
                &  (0.004)   &  (0.749)   &  (0.000)   \\
Out Traits      &    1.515   &            &            \\
                &  (0.116)   &            &            \\
RCV Comp. x Out Traits&   -0.130   &            &            \\
                &  (0.924)   &            &            \\
RCV Comp. + Endorse x Out Traits&    1.689   &            &            \\
                &  (0.167)   &            &            \\
In Traits       &            &    2.123   &            \\
                &            &  (0.077)   &            \\
RCV Comp. x In Traits&            &   -1.670   &            \\
                &            &  (0.345)   &            \\
RCV Comp. + Endorse x In Traits&            &   -2.131   &            \\
                &            &  (0.169)   &            \\
Diff. Traits    &            &            &   -0.170   \\
                &            &            &  (0.834)   \\
RCV Comp. x Diff. Traits&            &            &   -0.646   \\
                &            &            &  (0.575)   \\
RCV Comp. + Endorse x Diff. Traits&            &            &   -2.417*  \\
                &            &            &  (0.022)   \\
Constant        &    1.052*  &    0.579   &    1.794***\\
                &  (0.025)   &  (0.394)   &  (0.000)   \\
\hline
Psuedo R$^2$    &     0.05   &     0.04   &     0.04   \\
\textit{N}      &     2235   &     2235   &     2235   \\
\hline\hline
\end{tabular}
\end{table}
